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8 JavaScript Tricks That Made Me a Faster Developer in 2025
3 min readAug 30, 2025
Small changes in syntax, big wins in productivity
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The longer I’ve been coding in JavaScript, the more I’ve realized that speed doesn’t just come from frameworks or tools. It comes from knowing the language deeply enough that you don’t waste energy reinventing the wheel. Over the last few months, I’ve collected small but game-changing tricks that save me time daily.
Here are eight of them that I wish I’d learned earlier.
1. Default Parameters Instead of ||
We’ve all written value = input || "default" at some point. But the problem is 0 or "" gets wiped out unintentionally.
function greet(name = "Guest") {
return `Hello, ${name}!`;
}
console.log(greet()); // Hello, Guest!
console.log(greet("Alice")); // Hello, Alice!Cleaner, safer, and no accidental overwrites.
2. Optional Chaining to Avoid Nested Checks
No more endless if (obj && obj.user && obj.user.name) {...}.
const username = data?.user?.profile?.name ?? "Unknown";The ?. operator keeps your code concise while the ?? handles nullish defaults.
